Whitening Ingredients in Underarm Powder

For an underarm deodorant powder formula that also aims to whiten the underarm skin, the three ingredients you asked about - Alpha Arbutin, Safe-B3 (Niacinamide), and GlucoBright (Acetyl Glucosamine) - can be incorporated into a powder formula.

• Alpha Arbutin: This is a white, water-soluble powder. It can be blended directly with other powder ingredients in your formula. Its skin-brightening action occurs when it comes into contact with skin moisture (like sweat) and dissolves. It is recommended for use at 0.2-2%; for noticeable whitening effects, a concentration of 2% is suggested.

• Safe-B3™ (Niacinamide): This is also a white powder that is highly water-soluble and can be mixed into a powder formula. It helps reduce redness and dark spots, adds moisture, and strengthens the skin barrier. Its activity takes place when dissolved on the skin. Recommended usage is 1-10%; generally, 5% is advised, but Safe-B3™ can be used up to 10% without causing irritation.

• GlucoBright™ (Acetyl Glucosamine): This is a fine powder that dissolves easily in water and is explicitly mentioned as suitable for anhydrous formulas, which includes powder formulas. GlucoBright™ gently exfoliates the skin and, importantly, works very well with Niacinamide (such as Safe-B3™ or Extreme-B3™) to reduce dark spots and brighten the skin. It is recommended for use at 1-8%, with a specific recommendation of 4% when combined with Niacinamide at 2-4%.

How to Use in a Powder Formula

You can directly blend the powders of these ingredients with other powder components in your formula. However, the effectiveness in significantly whitening the skin might not be as pronounced as when used in liquid forms (like serums or creams). This is because these ingredients require dissolution in water and an appropriate pH level to function optimally, which can be more challenging to achieve and control in a dry powder applied directly to the skin.

Additional Recommendation

If you want to focus on underarm whitening in a powder formula, using GlucoBright™ in combination with Safe-B3™ or Extreme-B3™ is a good option. Research supports their synergistic effect in reducing dark spots and brightening the skin. Using the recommended proportions (e.g., GlucoBright™ 4% + Safe-B3™ 2-4%) will help enhance their combined efficacy.